• ★Compatible Models★ Aquarium filter cartridge is compatible with Tetra Whisper Bio-Bag filters 10i/IQ10/PF10 and Tetra ReptoFilter 20 gallons (90 GPH). 12 pack medium replacement filter cartridge. Size: 3.7 * 5.9 inches.
• ★Ultra Activated Carbon★ The filter contains super-activated carbon, which effectively filters and absorbs impurities in the water, keeping the aquarium water clear and keeping the aquarium glass free of scale buildup.
• ★Double-Sided Mesh★ The filter is made of dense dual-sided mesh to capture maximum debris and fish waste. Keep the water source clean and provide a healthy growing environment for fish.
• ★ABS Plastic Holder★ The built-in ABS holder distributes the activated carbon evenly for fuller filtration and reduces the frequency of water changes.
• ★Usage Tips★ Activated carbon has a limited adsorption capacity and for optimal performance we recommend that you change the cartridge every 2-4 weeks to keep your water clear. (This depends on the specific usage.)

Shipping Note: Shipping to Alaska, Hawaii, PO Boxes, and APO addresses is not available for this item

Warranty: 90 Day Woot Limited Warranty